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Humic Substances and Organic Matter δ13C Signature of a South Brazilian Cambisol after Charcoal Application

AutorLeal, Otávio dos Anjos; Dick, D. P.; Nebenzahl, A. D. B.; Maciel, V. G.; Lombardi, K. C.; González-Pérez, José Antonio ; Knicker, Heike ; Jiménez Morillo, N. T.
Palabras claveChemical fractionation
Total carbon content
Isotopic ratio
Fecha de publicación1-sep-2014
EditorUniversity of Ioannina
CitaciónThe 17th Meeting of the International Humic Substances Society . Natural Organic Matter: Structure-Dynamics-Innovative applications., Ioannina, Greece September 1-5 2014
ResumenBrazil is the world's greatest producer of charcoal, supplying mainly the steel industry. However, 15 % of the production is lost as charcoal fines. Thus, this residue has been proposed as a soil conditioner. Aiming to bring some light on the impact of charcoal on soil organic matter (SOM) composition and chemistry we investigated the effect of charcoal on SOM ¿13C signature and on the humic substances distribution of a Cambisol. About 40 Mg ha-1 of charcoal were applied to the soil. After 20 months, soil samples were collected (0-5; 5-10; 10-20; 20-30 cm). The soil without charcoal was also sampled. The main results were observed in the top depth, where the charcoal increased the total carbon content, mainly in its less oxidized fraction (humin). SOM ¿13C signature was lowered mainly in the 0-5 cm indicating that charcoal was not relevantly leached and/or incorporated to further depths.
Descripción2 p.-- 1 tabla.-- 8 referencias.-- Comunicación presentada en el 17th Meeting of the International Humic Substances Society . Natural Organic Matter: Structure-Dynamics-Innovative applications., Ioannina, Greece September 1-5 2014
Versión del editorhttp://ihss2014.org/
URIhttp://hdl.handle.net/10261/120931
Aparece en las colecciones: (IRNAS) Comunicaciones congresos
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